Knit goods



R. GRABNER Sept. 20, 1932.

KNIT GOODSV -FL1d June 5. ,1931 2 sheets-sheet 1 Patented Sept. 20,1.932

RUDOLF GRABNER, F HOHENSTEIN-ERNSTTHAL, G'FB'MLAN'Y'` KNIT GOODSApplication filed June 5, 1931, Serial No.

The present invention relates to a method of producing double-sided andladder-.proof .knit oods which, unlike the known fabrics of this type,retain their elasticity.

According to the present invention, prior defects are eliminated byrendering the goods ladder-proof by drawing the loops of one needle rowthrou h the loops of the opposite row before knoc ing them over. Forthis purpose, the two needle rows are disposed in a downwardly inclinedpositionexactly opposite one another and not in staggered relation toeach other, and the needles of one row are driven out or lowered onlyafter the needles of the opposite row have been knocked over. Thelowered needles pass through the loops formed by the opposite needles,and when they have passed through these loops far enough to expose theiropen latches, they are supplied with thread and drawn back, so thattheir thread is drawn through the loops of the other needles to formloops. The thread is held very tightly on the needles which will avoid,the slipping oir' or the missing of the needles to enter each loop orto drop a loop, which is a material advantage.

0ne way of applying the ,method according to the invention isillustrated, in the accompanying drawings, in which Figures 1 to 5 showvarious steps in the process; Figs. 6 and 7 are, respectively, a sideand front view of special parts serving for closing the latches afterthe latter have caught the thread; Fig. 8 is a top view of the two bedsof a knitting machine; Fig. 9 is an oblique view of a plurality ofneedles arranged side by side to carry out the process; Fig. 10 is aview of the doublesided goods obtained by this method; and Fig. 11 is aview of the loops of a fabric roduced by racking the needle beds over aivision before starting a course.

r)Che needles of the two needle rows 1 and 2 incline downwardly at anangle of approXi' mately 30o and are moved so that while needles of onerow are lowered those of the opposite row are raised, i. e., knockedover. The needles of the two rows 1 and 2 carry, for example, the meshes3 and 4, and the needles of the two rows 1 and 2 are in knocking overposition (Fig. 1). Now, if the 542,401, and in ermany June as, isso.

needles of row 1 are lowered, their heads will pass through the loops 4of the needles of row 2 (Fig. 2), since the needles of both rows areplaced exactly oppositev one another, and the needles of' row l continueto move through the loops 4 until their openedlatches are 1n front ofthe meshes 4, as indicated lin Fig. 3. While in thisv extreme position,the needles of row 1 are supplied with the thread 5 and drawn back, sothat the thread 5 is passed through the meshes 4 of the needles of row 2and formed into loops as on a knitting machine, whereupon the needles ofrow 1 knock their loops 3 over the looped thread 5 (Fig. 4). At the endof this operation;r both rows 1 and 2 arein knocking over positionagain,

but the` action of the needles is changed in so far as the needles ofrow 2 are lowered now and pass through the newly formedloops of theneedles of row-1k (Fig. 5.) to be supplied with thread by a thread-guidearranged opposite to them and not shown. r

If machines havi'nf1r individually movable needles are concerned; suchas, for example, flat knittin machines, not all needles of ,one row willjointly pass through the loops of the other row (Fig. 8) butsubsequently one after the other and always at the very. moment when theneedles of the opposite row vhave just been knocked over. 4`

The method can he carried out also vonmachines whose needle rowsvconstitute units as,

for example, in double rib warp frames. In this case, one needle barknocks over first whereupon the to pass throu So far as the inventionitself is concerned, it is immaterial whether the needles can be movedsingly'or jointly.

The method could be supplemented in so"- far as it would be possible todispose the two needle rows in staggered relation after the completionof a course, so that the needles of one row would pass through the loopsof the needles of the opposite row adjacent to the This would resultones penetrated before. y fabric of the kind in the production of ashown in of the loops produced.

opposite needle bar is lowered h the meshes of the first-bar. y

Fig. 11, which is even superior to the goods shown in Fig. 10 as to thefirmness l As the latches of the needles passed through lthe loops asdescribed may not always close automatically during the return of theneedles for the reason that the penetrated loops hanging on to theirneedles are lifted off on top by the penetratin needles, small latchclosers (Figs. 6 and 7 may be positioned in an elastic and oscillatorymanner above the needles, which embrace the needles and, during thereturn of the latter, are disposed so that the latches must strike themto be closed thereby. These elastic and oscillatory latch closers 7 may,vfor example, be secured to the needle beds and controlled by specialrods 8 or the like in such a way that t ey are lifted out of the needlesafter the latchesv are closed to prevent interference with the furtherwork of the needles.

1. A method of producing doublesided knit goods on a hosiery or knittingmachine with two downwardly inclined needle rows consisting in loweringat rst only the needles of one of the two rows arranged exactly oppositeone another when the needles of the opposite row are knocked over,causin the needles of the first row to pass throng the meshes of theneedles of the other row, supplyin the needles of the rst row with threadrawing back the needles of the first row with their thread through themeshes already penetrated by them in order to form loo s and in causingthe penetrated meshesto be ocked over the loops drawn through them.

2. A method as claimed in claim 1, according to which one of the twoneedle rows is racked after the completion of a course and the loweredneedles are passed through the meshes of the needles adjacent to theneedles of the opposite row.

In testimony whereof I have aixed my signature.

RUDOLF GRABNER.

